Automatic wrench.



M. I. GINSBURG.

AUTOMATIC WRENCH.

APPLICATION FILED JULY 5.1913.

1 188371., Patented May16, 1916.

$2 may a? 1mm wtoz ans an FIGE MICEL I. GINSBURG, 0F PHILADELPHIA, PENNSYLVANIA.

AUTOMATIC WRENCH.

iaeasti,

" Application filed July 5, 1913. Serial No. 777,502.

Automatic Wrenches, of which the follow ing is a specification.

' My invention relates to new and useful improvements in automatic wrenches, and has for its object to provide an exceedingly simple and'efi'ective device of this character, which will serve all the purposes of the ordinary open end of the S-w'rench, while also serving all the purposes of a ratchet wrench with many advantages over the latter.

With these ends in view this. invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same,- I will .describe its construction in detail, referring by numeral to the accompanying drawing forming a part of this specification, in which- Figure 1 is a side elevation of my automatic'wrench, a portion of the head being sectioned away, so as to clearly illustrate the construction and arrangement of the working parts; and Fig. 2, is an edge view of the wrench.

In carrying out my invention as here embodied 1 represents the head, which is slotted .to form a housing for the working parts,

and with this head is formed the stationary jaw 2.

3 represents the swinging jaw which is pivoted upon the stud 4 within the head and projects outward, normally lying parallel with the stationary jaw 2, the pin 5 serving to limit the inward movement of the swinging jaw. The swinging jaw has formed therewith the heel 6, the latter having the toe 7 projecting therefrom, with which the nose 8 of the handle 9 is adapted to engage, for the purpose hereinafter set forth. The handle 9 is pivoted upon the stud 10 within the head and projects outward to the desired length to give the proper leverage for the work to be done.

11 represents a spring which is held in place by the pin 12., one of its ends bearing Specification of Letters latent.

' so that it may thereafter upon the underside of the handle 9, while the otherend bears upon the other side of the swinging jaw 3, thus normally holding both the handle and the swinging jaw in the positions shown in Fig. 1.

From the foregoing description the operlPatente-d May 116, 19116.

ation of my improvement will be obviously as follows z-VVhen the wrench is applied to a nut or other similar work, the swinging aw and the handle being in the position shown will take hold of the work in the same manner as an ordinary open end wrench or S-wrench, and when power is applled to the handle in the direction of the arrow in Fig. 1, the swinging jaw will remain held, but when force is applied to the handle in the opposite direction of the arrow, said handle will swing against the actlon of the spring 11 carrying the nose 8 out of engagement with the toe 7, thus releasmg the jaw 8, permitting it to swing away from the stationary jaw 2, thereby permitting the wrench to slip upon the work, so as to take a new hold, and as soon as the handle is drawn upon in the opposite direction, the nose will again engage with the toe and the swinging jaw will be held, perform its work 111 the usual manner, thus producing automatically the effect of a ratchet wrench.

While I have shown only one form of carrying out my invention, it will be readily understood that the design and proportion may be considerably varied in carry- 1 ing out the principles and I therefore do not wish to be limited to the exact details of construction herein shown as these may be varied within the limits of the appended claims without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and useful, is

1. In a device of the character stated, a head, a stationary jaw formed therewith, a swinging jaw pivoted within the head, and normally lying parallel with the stationary jaw, a heel formed with the swinging jaw, an integral toe formed with the heel, apin for limiting the inward movement of the swinging jaw, a handle pivoted in the head, an integral nose formed with said handle adapted to coact with the toe, whereby the swinging jaw will be held against Milt the work on which it is being used, said Mt! aw, a nose formed integral with the inner end of the handle at the side opposite the pivot point, said nose adapted to engage the toe to hold the swinging jaw in a positlon parallel to the stationary jaw, said swinging jaw being free to move when the nose is entirely disengaged from the toe,

means for limiting the inward movement 20 of the swinging jaw and means for normally holding the nose in contact with the toe as shown and for the purpose specified.

In testimony whereof, I have hereunto affixed my signature in the presence .of two 2 subscribing witnesses. MICHAEL I. GINSBURG.

Witnesses:

T. FOSTER THOMAS, LEONARD W. BELZ. 

